/* HuntFeed - Modern Responsive Design System */
:root {
    /* Design Tokens */
    --color-primary: #2980b9;
    --color-primary-light: #3498db;
    --color-primary-dark: #1f618d;

    --color-secondary: #1abc9c;
    --color-accent: #e74c3c;

    --color-surface: #ffffff;
    --color-surface-alt: #f8f9fa;
    --color-surface-dark: #2c3e50;

    --color-text: #333333;
    --color-text-light: #6c757d;
    --color-text-inverse: #ffffff;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Roboto Mono', 'Courier New', monospace;

    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Fluid Typography */
    --fluid-min-width: 320;
    --fluid-max-width: 1400;
    --fluid-min-font: 16;
    --fluid-max-font: 18;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        --color-surface: #1a1a1a;
        --color-surface-alt: #2d2d2d;
        --color-surface-dark: #0d1117;
        --color-text: #e1e1e1;
        --color-text-light: #a0a0a0;
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    }
}

/* Reset & Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
    scroll-padding-top: 8rem;
}

body {
    font-family: var(--font-sans);
    font-size: 1.6rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-surface);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography Scale */
h1,
.h1 {
    font-size: clamp(3.2rem, 5vw, 4.8rem);
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

h2,
.h2 {
    font-size: clamp(2.4rem, 4vw, 3.6rem);
    line-height: 1.3;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

h3,
.h3 {
    font-size: clamp(2rem, 3vw, 2.8rem);
    line-height: 1.4;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

h4,
.h4 {
    font-size: clamp(1.8rem, 2.5vw, 2.2rem);
    line-height: 1.4;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-md);
    max-width: 65ch;
}

.lead {
    font-size: 2rem;
    font-weight: 600;
}

.section-subtitle {
    color: var(--color-text-light);
    max-width: 65ch;
    margin: 0 auto var(--spacing-xl);
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

.text-gradient {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Navigation - Enhanced */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(169deg, #2c4553 30%, #29A4A9 76%);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-lg);
}

.navbar-brand {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-text-inverse);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.navbar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

@media (min-width: 992px) {
    .navbar-nav {
        flex-direction: row;
        gap: var(--spacing-md);
    }
}

.nav-link {
    color: var(--color-text-inverse);
    opacity: 0.9;
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    font-weight: 500;
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Hero Section - Redesigned */
.hero-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: var(--color-text-inverse);
    position: relative;
    overflow: hidden;
    margin-top: 5.6rem;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(52, 152, 219, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(26, 188, 156, 0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 1.2rem 2.4rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1.6rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-inverse);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-outline-primary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline-primary:hover {
    background: var(--color-primary);
    color: white;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

/* Code Display - Enhanced */
.code-display {
    background: var(--color-surface-dark);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    margin: var(--spacing-xl) 0;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-tabs {
    display: flex;
    gap: var(--spacing-sm);
}

.code-tab {
    padding: var(--spacing-xs) var(--spacing-md);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 1.4rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.code-tab.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.code-body {
    padding: var(--spacing-lg);
    overflow-x: auto;
}

.code-body pre {
    margin: 0;
    font-family: var(--font-mono);
    font-size: 1.4rem;
    line-height: 1.5;
}

.code-block {
    display: none;
}

.code-block.active {
    display: block;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.feature-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.feature-icon {
    width: 6rem;
    height: 6rem;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    font-size: 2.4rem;
    color: white;
}

/* Performance Charts */
.performance-chart {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.chart-item {
    margin-bottom: var(--spacing-lg);
}

.chart-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.chart-bar {
    height: 3rem;
    background: rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.chart-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width 1.5s ease-out;
    position: relative;
}

.chart-fill::after {
    content: attr(data-value);
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Example Tabs - Enhanced */
.example-tabs {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.tab-nav {
    display: flex;
    overflow-x: auto;
    background: var(--color-surface-alt);
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    scrollbar-width: thin;
}

.tab-button {
    padding: 1.2rem 2.4rem;
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tab-button:hover {
    color: var(--color-primary);
    background: rgba(var(--color-primary), 0.1);
}

.tab-button.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.tab-content {
    padding: var(--spacing-xl);
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* API Reference */
.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.api-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-md);
}

.api-methods {
    list-style: none;
    padding: 0;
}

.api-method {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.api-method:last-child {
    border-bottom: none;
}

.api-method code {
    background: rgba(var(--color-primary), 0.1);
    color: var(--color-primary);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 1.4rem;
}

/* FAQ Accordion */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: var(--spacing-lg);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-surface-alt);
}

.faq-question::after {
    content: '▸';
    transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"]::after {
    transform: rotate(90deg);
}

.faq-answer {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-answer.active {
    padding: var(--spacing-lg);
    max-height: 500px;
}

/* Requirements List */
.requirements-list {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.requirement-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.requirement-item:last-child {
    margin-bottom: 0;
}

/* Footer - Enhanced */
.footer {
    background: var(--color-surface-dark);
    color: var(--color-text-inverse);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-heading {
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: white;
    padding-left: var(--spacing-xs);
}

.footer-brand {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-text-inverse);
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

/* Background Utilities */
.bg-light {
    background-color: var(--color-surface-alt) !important;
}

.bg-white {
    background-color: var(--color-surface) !important;
}

/* Text Utilities */
.text-success {
    color: var(--color-secondary) !important;
}

.text-muted {
    color: var(--color-text-light) !important;
}

.text-reset {
    color: inherit;
    text-decoration: none;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
    .hero-section {
        padding: var(--spacing-2xl) 0;
        margin-top: 6rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .api-grid {
        grid-template-columns: 1fr;
    }

    .tab-nav {
        flex-direction: column;
    }

    .tab-button {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 3rem;
    }

    h1, .h1 {
        font-size: 2.8rem;
    }

    .navbar-brand {
        font-size: 2rem;
    }

    .code-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Print Styles */
@media print {
    .navbar,
    .cta-buttons,
    .social-links {
        display: none;
    }

    .hero-section {
        margin-top: 0;
        background: none;
        color: black;
    }

    .code-display {
        page-break-inside: avoid;
        border: 1px solid #ddd;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    .footer {
        background: none;
        color: black;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}